40558219664 has 10 divisors (see below), whose sum is σ = 78581550630. Its totient is φ = 20279109824.

The previous prime is 40558219657. The next prime is 40558219687. The reversal of 40558219664 is 46691285504.

It can be written as a sum of positive squares in only one way, i.e., 36369541264 + 4188678400 = 190708^2 + 64720^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1267444349 + ... + 1267444380.

It is an arithmetic number, because the mean of its divisors is an integer number (7858155063).

Almost surely, 2^40558219664 is an apocalyptic number.

It is an amenable number.

40558219664 is a deficient number, since it is larger than the sum of its proper divisors (38023330966).

40558219664 is a wasteful number, since it uses less digits than its factorization.

40558219664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534888737 (or 2534888731 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 40558219664 in words is "forty billion, five hundred fifty-eight million, two hundred nineteen thousand, six hundred sixty-four".